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#include "qwmpplayercontrol.h"

#include "qwmpevents.h"

#include "qwmpglobal.h"

#include "qwmpmetadata.h"

#include "qwmpplaylist.h"

#include <qmediaplayer.h>

#include <qmediaplaylist.h>

#include <QtCore/qdebug.h>

#include <QtCore/qurl.h>

#include <QtCore/qvariant.h>

QWmpPlayerControl::QWmpPlayerControl(IWMPCore3 *player, QWmpEvents *events, QObject *parent)

    : QMediaPlayerControl(parent)

    , m_player(player)

    , m_controls(0)

    , m_settings(0)

    , m_state(QMediaPlayer::StoppedState)

    , m_duration(0)

    , m_buffering(false)

    , m_audioAvailable(false)

    , m_videoAvailable(false)

{

    m_player->get_controls(&m_controls);

    m_player->get_settings(&m_settings);

    m_player->get_network(&m_network);

    if (m_settings)

        m_settings->put_autoStart(FALSE);

    WMPPlayState state = wmppsUndefined;

    if (m_player->get_playState(&state) == S_OK)

        playStateChangeEvent(state);

    connect(events, SIGNAL(Buffering(VARIANT_BOOL)), this, SLOT(bufferingEvent(VARIANT_BOOL)));

    connect(events, SIGNAL(PositionChange(double,double)),

            this, SLOT(positionChangeEvent(double,double)));

    connect(events, SIGNAL(PlayStateChange(long)), this, SLOT(playStateChangeEvent(long)));

    connect(events, SIGNAL(CurrentItemChange(IDispatch*)),

            this, SLOT(currentItemChangeEvent(IDispatch*)));

    connect(events, SIGNAL(MediaChange(IDispatch*)), this, SLOT(mediaChangeEvent(IDispatch*)));

}

QWmpPlayerControl::~QWmpPlayerControl()

{

    if (m_controls) m_controls->Release();

    if (m_settings) m_settings->Release();

    if (m_network) m_network->Release();

}

QMediaPlayer::State QWmpPlayerControl::state() const

{

    return m_state;

}

QMediaPlayer::MediaStatus QWmpPlayerControl::mediaStatus() const

{

    return m_status;

}

qint64 QWmpPlayerControl::duration() const

{

    double duration = 0.;

    IWMPMedia *media = 0;

    if (m_controls && m_controls->get_currentItem(&media) == S_OK) {

        media->get_duration(&duration);

        media->Release();

    }

    return m_duration * 1000;

}

qint64 QWmpPlayerControl::position() const

{

    double position;

    if (m_controls)

        m_controls->get_currentPosition(&position);

    return position * 1000;

}

void QWmpPlayerControl::setPosition(qint64 position)

{

    if (m_controls)

        m_controls->put_currentPosition(double(position) / 1000.);

}

int QWmpPlayerControl::volume() const

{

    long volume = 0;

    if (m_settings)

        m_settings->get_volume(&volume);

    return volume;

}

void QWmpPlayerControl::setVolume(int volume)

{

    if (m_settings && m_settings->put_volume(volume) == S_OK)

        emit volumeChanged(volume);

}

bool QWmpPlayerControl::isMuted() const

{

    VARIANT_BOOL mute = FALSE;

    if (m_settings)

        m_settings->get_mute(&mute);

    return mute;

}

void QWmpPlayerControl::setMuted(bool muted)

{

    if (m_settings && m_settings->put_mute(muted ? TRUE : FALSE) == S_OK)

        emit mutedChanged(muted);

}

int QWmpPlayerControl::bufferStatus() const

{

    long progress = 0;

    if (m_network)

        m_network->get_bufferingProgress(&progress);

    return progress;

}

bool QWmpPlayerControl::isVideoAvailable() const

{

    return m_videoAvailable;

}

bool QWmpPlayerControl::isAudioAvailable() const

{

    return m_audioAvailable;

}

void QWmpPlayerControl::setAudioAvailable(bool available)

{

    if (m_audioAvailable != available)

        emit audioAvailableChanged(m_audioAvailable = available);

}

void QWmpPlayerControl::setVideoAvailable(bool available)

{

    if (m_videoAvailable != available)

        emit videoAvailableChanged(m_videoAvailable = available);

}

bool QWmpPlayerControl::isSeekable() const

{

    return true;

}

QMediaTimeRange QWmpPlayerControl::availablePlaybackRanges() const

{

    QMediaTimeRange ranges;

    IWMPMedia *media = 0;

    if (m_controls && m_controls->get_currentItem(&media) == S_OK) {

        double duration = 0;

        media->get_duration(&duration);

        media->Release();

        if(duration > 0)

            ranges.addInterval(0, duration * 1000);

    }

    return ranges;

}

qreal QWmpPlayerControl::playbackRate() const

{

    double rate = 0.;

    if (m_settings)

        m_settings->get_rate(&rate);

    return rate;

}

void QWmpPlayerControl::setPlaybackRate(qreal rate)

{

    if (m_settings)

        m_settings->put_rate(rate);

}

void QWmpPlayerControl::play()

{

    if (m_controls)

        m_controls->play();

}

void QWmpPlayerControl::pause()

{

    if (m_controls)

        m_controls->pause();

}

void QWmpPlayerControl::stop()

{

    if (m_controls)

        m_controls->stop();

}

QMediaContent QWmpPlayerControl::media() const

{

    QMediaResourceList resources;

    QUrl tmpUrl = url();

    if (!tmpUrl.isEmpty())

        resources << QMediaResource(tmpUrl);

    return resources;

}

const QIODevice *QWmpPlayerControl::mediaStream() const

{

    return 0;

}

void QWmpPlayerControl::setMedia(const QMediaContent &content, QIODevice *stream)

{

    if (!content.isNull() && !stream)

        setUrl(content.canonicalUrl());

    else

        setUrl(QUrl());

}

void QWmpPlayerControl::bufferingEvent(VARIANT_BOOL buffering)

{

    if (m_state != QMediaPlayer::StoppedState) {

        emit mediaStatusChanged(m_status = buffering

                ? QMediaPlayer::BufferingMedia

                : QMediaPlayer::BufferedMedia);

    }

}

void QWmpPlayerControl::currentItemChangeEvent(IDispatch *dispatch)

{

    IWMPMedia *media = 0;

    if (dispatch && dispatch->QueryInterface(

            __uuidof(IWMPMedia), reinterpret_cast<void **>(&media)) == S_OK) {

        double duration = 0;

        if (media->get_duration(&duration) == S_OK)

            emit durationChanged(duration * 1000);

    }

}

void QWmpPlayerControl::mediaChangeEvent(IDispatch *dispatch)

{

    IWMPMedia *media = 0;

    if (dispatch &&  dispatch->QueryInterface(

            __uuidof(IWMPMedia), reinterpret_cast<void **>(&media)) == S_OK) {

        IWMPMedia *currentMedia = 0;

        if (m_controls && m_controls->get_currentItem(&currentMedia) == S_OK) {

            VARIANT_BOOL isEqual = VARIANT_FALSE;

            if (media->get_isIdentical(currentMedia, &isEqual) == S_OK && isEqual) {

                double duration = 0;

                if (media->get_duration(&duration) == S_OK)

                    emit durationChanged(duration * 1000);

            }

            currentMedia->Release();

        }

        media->Release();

    }

}

void QWmpPlayerControl::positionChangeEvent(double from, double to)

{

    Q_UNUSED(from);

    emit positionChanged(to * 1000);

}

void QWmpPlayerControl::playStateChangeEvent(long state)

{

    switch (state) {

    case wmppsUndefined:

        m_state = QMediaPlayer::StoppedState;

        m_status = QMediaPlayer::UnknownMediaStatus;

        emit stateChanged(m_state);

        emit mediaStatusChanged(m_status);

        break;

    case wmppsStopped:

        if (m_state != QMediaPlayer::StoppedState) {

            m_state = QMediaPlayer::StoppedState;

            m_status = QMediaPlayer::LoadedMedia;

            emit stateChanged(m_state);

            emit mediaStatusChanged(m_status);

        }

        break;

    case wmppsPaused:

        if (m_state != QMediaPlayer::PausedState && m_status != QMediaPlayer::BufferedMedia) {

            m_state = QMediaPlayer::PausedState;

            m_status = QMediaPlayer::BufferedMedia;

            emit stateChanged(m_state);

            emit mediaStatusChanged(m_status);

        } else if (m_state != QMediaPlayer::PausedState) {

            emit stateChanged(m_state = QMediaPlayer::PausedState);

        } else if (m_status != QMediaPlayer::BufferedMedia) {

            emit mediaStatusChanged(m_status = QMediaPlayer::BufferedMedia);

        }

        break;

    case wmppsPlaying:

    case wmppsScanForward:

    case wmppsScanReverse:

        if (m_state != QMediaPlayer::PlayingState && m_status != QMediaPlayer::BufferedMedia) {

            m_state = QMediaPlayer::PlayingState;

            m_status = QMediaPlayer::BufferedMedia;

            emit stateChanged(m_state);

            emit mediaStatusChanged(m_status);

        } else if (m_state != QMediaPlayer::PlayingState) {

            emit stateChanged(m_state = QMediaPlayer::PlayingState);

        } else if (m_status != QMediaPlayer::BufferedMedia) {

            emit mediaStatusChanged(m_status = QMediaPlayer::BufferedMedia);

        }

        if (m_state != QMediaPlayer::PlayingState)

            emit stateChanged(m_state = QMediaPlayer::PlayingState);

        if (m_status != QMediaPlayer::BufferedMedia)

            emit mediaStatusChanged(m_status = QMediaPlayer::BufferedMedia);

        break;

    case wmppsBuffering:

    case wmppsWaiting:

        if (m_status != QMediaPlayer::StalledMedia && m_state != QMediaPlayer::StoppedState)

            emit mediaStatusChanged(m_status = QMediaPlayer::StalledMedia);

        break;

    case wmppsMediaEnded:

        if (m_status != QMediaPlayer::EndOfMedia && m_state != QMediaPlayer::StoppedState) {

            m_state = QMediaPlayer::StoppedState;

            m_status = QMediaPlayer::StalledMedia;

            emit stateChanged(m_state);

            emit mediaStatusChanged(m_status);

        }

        break;

    case wmppsTransitioning:

        if (m_status != QMediaPlayer::LoadingMedia)

            emit mediaStatusChanged(m_status = QMediaPlayer::LoadingMedia);

        break;

    case wmppsReady:

        if (m_status != QMediaPlayer::LoadedMedia)

            m_status = m_status = QMediaPlayer::LoadedMedia;

            if (m_state != QMediaPlayer::StoppedState)

                emit stateChanged(QMediaPlayer::StoppedState);

            emit mediaStatusChanged(m_status);

        break;

    case wmppsReconnecting:

        if (m_status != QMediaPlayer::StalledMedia && m_state != QMediaPlayer::StoppedState)

            emit mediaStatusChanged(m_status = QMediaPlayer::StalledMedia);

        break;

    default:

        break;

    }

}

QUrl QWmpPlayerControl::url() const

{

    BSTR string;

    if (m_player && m_player->get_URL(&string) == S_OK) {

        QUrl url(QString::fromWCharArray(string, SysStringLen(string)), QUrl::StrictMode);

        SysFreeString(string);

        return url;

    } else {

        return QUrl();

    }

}

void QWmpPlayerControl::setUrl(const QUrl &url)

{

    if (url != QWmpPlayerControl::url() && m_player) {

        BSTR string = SysAllocString(reinterpret_cast<const wchar_t *>(url.toString().unicode()));

        m_player->put_URL(string);

        SysFreeString(string);

    }

}